High-displacement-ability silicone fire-proof sealing glue and manufacturing method of the same

A fire-resistant sealant and sealant technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problem of high elongation, increased Shore A hardness, and elongation at break of silicone weather-resistant sealants. problems such as lowering, to achieve the effects of good adhesion, low smoke generation, and low energy consumption in the production process

Active Publication Date: 2013-06-19
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a method of imparting flame retardancy to silicone sealants, flame retardant fillers are generally added. Flame retardant fillers include inorganic fillers and organic fillers; inorganic fillers generally use aluminum hydroxide, magnesium hydroxide, zinc borate, and zinc oxide, and more Only a large amount can have a better flame retardant effect. At the same time, the elongation at break of RTV silicone rubber decreases and the Shore A hardness increases significantly, and the adhesion is affected to a certain extent; organic fillers generally use halogen-containing flame retardant Flame retardants such as decabromodiphenyl ether, etc., with the improvement of environmental protection requirements, the use of such flame retardants is increasingly restricted
Among the existing domestic patents, CN1438289 proposed neutral silicone fireproof sealant and its preparation method, CN1687288 proposed flame retardant silicone structural sealant and its preparation method, CN1865383 proposed electronic flame retardant silicone sealant and Its manufacturing method, CN1213679, proposed flame-retardant room temperature vulcanized silicone rubber, and the room temperature vulcanized silicone rubber obtained by the above-mentioned patent could not meet the high elongation required by silicone weather-resistant sealant

Method used

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  • High-displacement-ability silicone fire-proof sealing glue and manufacturing method of the same
  • High-displacement-ability silicone fire-proof sealing glue and manufacturing method of the same
  • High-displacement-ability silicone fire-proof sealing glue and manufacturing method of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 50 Pa.s at 25°C, 30 parts of polydimethylsiloxane with a viscosity of 0.1 Pa.s at 25°C, and nano-active calcium carbonate 30 parts, 30 parts of ammonium polyphosphate, and 50 parts of melamine borate were added to the kneader, at a temperature of 110 ° C, a vacuum of 0.09 MPa, dehydration and blending for 90 minutes, cooled to room temperature to obtain the base material; the above base material was added to the planetary Mixer, then add 2 parts of vinyl tributylketoxime silane, 8 parts of methyl tributylketoxime silane, 1 part of methylphenylbis(N-methylacetamido) silane, 6 parts of fumed silica , 2 parts of γ-aminopropyltriethoxysilane, 0.2 part of dibutyltin dilaurate, and the chemical reaction was carried out for 90 minutes at a vacuum degree of 0.09MPa and a rotation speed of 300rpm. The product performance indicators are shown in Table 1.

Embodiment 2

[0033] 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 80 Pa.s at 25°C, 40 parts of polydimethylsiloxane with a viscosity of 0.5 Pa.s at 25°C, and nano-active calcium carbonate 30 parts, 20 parts of melamine pyrophosphate, and 80 parts of melamine cyanurate were added to the kneader, dehydrated and blended for 60 minutes at a temperature of 120 ° C, a vacuum of 0.09 MPa, and cooled to room temperature to obtain a base material; the above base material was added to Planetary mixer, then add 3 parts of vinyl tributylketoxime silane, 4 parts of methyl tributylketoxime silane, 4 parts of methyl vinyl dibutylketoxime silane, 6 parts of fumed silica, N- 1.5 parts of β-aminoethyl γ-aminopropyl triethoxysilane, 0.2 parts of dibutyltin dilaurate, the chemical reaction was carried out for 90 minutes at a vacuum of 0.09 MPa and a rotation speed of 300 rpm. The product performance indicators are shown in Table 1.

Embodiment 3

[0035] 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 30 Pa.s at 25°C, 20 parts of polydimethylsiloxane with a viscosity of 5 Pa.s at 25°C, and 40 parts of nano-active calcium carbonate Parts, 30 parts of ammonium polyphosphate, 60 parts of melamine pyrophosphate, added to the kneader, at a temperature of 130 ° C, a vacuum of 0.09 MPa, dehydration and blending for 60 minutes, cooled to room temperature to obtain the base material; the above base material was added to the planetary Mixer, then add 6 parts of phenyl tributylketoxime silane, 3 parts of methyl tributyl ketoxime silane, 5 parts of fumed silica, 2 parts of γ-aminopropyl triethoxysilane, dilauric acid 0.2 parts of dibutyltin, the chemical reaction was carried out for 60 minutes at a vacuum degree of 0.09 MPa and a rotation speed of 300 rpm. The product performance indicators are shown in Table 1.

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PUM

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Abstract

The invention discloses high-displacement-ability silicone fire-proof sealing glue and a manufacturing method of the high-displacement-ability silicone fire-proof sealing glue. The high-displacement-ability silicone fire-proof sealing glue and the manufacturing method of the high-displacement-ability silicone fire-proof sealing glue are characterized in that 100 parts of alpha, omega-dihydroxyl polysiloxane, 0-50 parts of polydimethylsiloxane, 0-40 parts of inorganic fillers, and 30-120 parts of nitrogen-phosphorus-based flame retardants are added into a kneading machine under the temperatures of 80-150 DEG C and the vacuum degree of 0.06-0.099MPa, dehydrated and mixed together for 30-300 minutes, and cooled to obtain a basic material. At room temperature, the basic material is added into a planetary mixer or a high-speed scattering stirring machine, and then 2-15 parts of gas phase method silica, 3-15 parts of compound cross-linking agents, 0.5-3 parts of silane coupling agents, and 0.05-0.5 part of catalytic agents are added into the stirring machine and react with the basic material for 30-180 minutes under the vacuum degree of 0.06-0.099MPa and the rotating speed of 10-800rpm to prepare the high-displacement-ability silicone fire-proof sealing glue. The high-displacement-ability silicone fire-proof sealing glue has good cohesiveness and water-proof cohesiveness, and displacement ability of the high-displacement-ability silicone fire-proof sealing glue can reach the 25th level. The high-displacement-ability silicone fire-proof sealing glue has effective sealing effect under the condition of normal elasticity and cutting deformation of a curtain wall.

Description

technical field [0001] The invention relates to a high-displacement-capacity silicone fireproof sealant and a manufacturing method thereof, belonging to the field of polymer sealing materials. Background technique [0002] Commonly known as silicone weather-resistant sealant refers to the silicone sealant used to seal the joints between building curtain wall panels. Silicone sealant has good UV resistance, displacement resistance, elastic recovery ability and excellent resistance to commonly used curtain wall materials. Excellent adhesion, becoming the preferred sealing material for building curtain walls. [0003] Silicone weather-resistant sealant is different from general silicone sealant. It requires high elasticity after vulcanization, that is, the ability to resist high displacement, excellent adhesion and water-resistant adhesion, and excellent weather resistance. The silicone sealant without flame retardant filler itself has poor flame retardancy, and it will contin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09K3/10
Inventor 蒋金博陈文浩张冠琦黄恒超
Owner GUANGZHOU BAIYUN CHEM IND
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